亚硫酸盐废液中戊糖己糖同步酒精发酵中间试验  

A Pilot Scale of Ethanol Fermentation for Simultaneous Utilizing Pentoses and Hexoses in Spent Sulfite Liquor

作　　者：勇强[1] 余世袁[1] 刘琦 刘明生 

机构地区：[1]南京林业大学

出　　处：《生物工程学报》1999年第1期124-127,共4页Chinese Journal of Biotechnology

摘　　要：木材在亚硫酸盐法制浆过程中，占木材干重２０％～３０％的半纤维素降解成单糖而溶于废液中，废液中单糖的利用，不仅能够充分利用生物质资源，而且对于后续产品木质素的深加工十分必要。废液中糖主要由己糖和戊糖组成，近年来，随着阔叶材在制浆原料中的比例不断增加，废...Pentoses and hexoses in spent sulfite liquor were fermented to ethanol simultaneously with a pentose fermentable yeast Candida shehatae R in a batch system based on the results of 1.5 L fermentor.The spent sulfite liquor was neutralized to pH 5.20～5.50,followed by fermentation for 22 h at 38℃±1℃ controlling the amount of air supply in 5m 3 fermentor.The concentration of sugars in the spent liquor was decreased from 25 0～26 0 g/L to 1.9～2.6 g/L,with a sugars consumption of 89%～93%.The final ethanol concentration was 1.15%～1.38%,which is 81%～94% of the theoretical yield.

关 键 词：亚硫酸盐废液 戊糖 已糖 酒精 发酵 

分 类 号：TS262.2[轻工技术与工程—发酵工程] X78[轻工技术与工程—食品科学与工程]